Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1933. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -3.9 6.1 1.1 10.0 21.1 17.2 23.9 22.2 22.2 20.0 14.4 18.3 2 -2.2 6.1 5.6 10.0 12.8 17.2 23.3 21.1 21.1 17.8 12.8 13.9 3 7.2 6.1 7.8 11.1 12.8 18.3 22.8 22.8 24.4 16.1 7.8 5.6 4 11.7 5.0 7.8 11.7 14.4 19.4 23.9 22.2 22.2 15.6 4.4 8.3 5 6.1 2.8 4.4 13.3 12.8 18.9 23.3 22.8 21.7 10.6 6.1 13.3 6 7.2 7.2 3.9 7.2 16.1 17.8 23.9 21.7 21.7 12.8 7.2 3.9 7 9.4 -9.4 0.6 5.6 21.1 19.4 22.2 21.7 21.1 15.6 7.2 -1.7 8 5.6 -14.4 7.2 13.9 14.4 17.8 21.7 22.2 20.6 15.0 3.3 2.8 9 2.8 -12.8 15.0 18.3 22.8 19.4 22.2 22.2 21.7 8.9 4.4 2.2 10 3.9 -2.8 5.6 16.7 23.3 20.0 23.3 21.1 18.3 12.8 5.0 6.7 11 8.9 -11.1 11.1 9.4 22.8 20.0 23.9 20.6 20.0 16.7 12.2 11.1 12 -1.7 -5.0 16.7 10.6 23.9 18.3 24.4 21.7 22.2 17.2 10.0 2.8 13 -1.7 9.4 18.3 12.8 23.3 18.3 23.9 21.1 22.2 18.9 10.6 6.7 14 0.6 5.6 15.6 4.4 20.0 17.8 24.4 21.7 21.1 17.2 4.4 17.2 15 0.6 0.0 5.6 2.2 13.9 13.3 20.0 20.6 20.6 17.2 10.0 18.9 16 13.9 2.2 8.9 4.4 16.1 13.9 22.8 18.3 20.0 16.1 8.9 15.6 17 17.2 11.7 17.2 10.0 18.9 16.7 21.1 20.0 23.3 13.3 16.1 13.9 18 18.3 1.7 20.6 17.8 19.4 15.6 21.7 20.6 21.1 16.7 13.3 0.6 19 11.7 12.8 9.4 20.0 20.0 18.3 22.2 20.6 21.1 15.0 10.0 1.1 20 16.1 1.7 0.6 11.1 21.1 18.9 21.7 21.1 22.2 17.2 15.0 5.0 21 18.3 2.2 3.3 8.3 22.2 19.4 23.3 21.7 22.2 18.3 15.6 3.3 22 8.9 7.8 12.2 12.2 21.7 21.7 22.8 21.7 20.6 18.3 6.1 1.7 23 6.1 9.4 12.8 13.9 22.8 22.8 22.8 20.0 20.6 16.1 5.6 12.8 24 7.8 16.7 17.2 14.4 22.2 21.1 22.8 20.6 21.1 15.6 8.3 11.1 25 5.0 11.7 10.6 16.1 16.7 22.8 21.1 20.6 22.2 17.2 1.1 1.1 26 8.9 6.7 8.9 16.1 16.1 22.2 20.6 21.7 23.3 11.1 6.1 3.3 27 2.2 5.6 15.0 14.4 18.9 23.3 20.0 21.7 22.8 13.3 3.3 -1.1 28 7.2 2.8 16.1 14.4 18.9 23.3 19.4 22.8 20.0 12.2 11.7 1.7 29 8.9 0.0 17.2 20.6 15.6 23.9 20.0 22.2 20.6 12.8 18.9 3.3 30 8.9 0.0 16.7 12.2 18.3 23.9 21.7 21.1 20.6 13.9 15.0 3.3 31 10.0 0.0 11.1 0.0 18.9 0.0 23.3 21.1 0.0 14.4 0.0 5.0 ----------------------------------------------------------------------------------------- Max 18.3 16.7 20.6 20.6 23.9 23.9 24.4 22.8 24.4 20.0 18.9 18.9 Min -3.9 -14.4 0.6 2.2 12.8 13.3 19.4 18.3 18.3 8.9 1.1 -1.7 Mean 7.2 3.1 10.4 12.1 18.8 19.4 22.4 21.3 21.4 15.3 9.2 6.8 -----------------------------------------------------------------------------------------